Here is a nice collection of Pentels Olympic pens and pencils. I have also included the pages from the Pentel 1984 catalog. I do not have all of them but this is a good start. On the left I have the Rolling Writer and Sharplet set, the Clicroller RC-30 and the Excalibur Pen and Pencil set. All nice, all working and all should be in your collection. What other companies have used Pentel for advertising at the national level? I have found Disney to be a big player and I just found a Pentel R-3 from Radio Shack which I will post next.
